#1C358B#1C358B

#1C358B is a dark, vivid blue. Relative luminance 0.047; OKLCH L 36.9% C 0.146 H 266.5°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#1C358B
RGB	rgb(28, 53, 139)
HSL	hsl(226, 66%, 33%)
HSV	hsv(226, 80%, 55%)
CMYK	cmyk(79.9%, 61.9%, 0%, 45.5%)
CIE-LAB	lab(25.73, 23.65, -50.49)
CIE-LCH	lch(25.73, 55.75, 295.10°)
OKLab	oklab(36.87% -0.0088 -0.1459)
OKLCH	oklch(36.87% 0.146 266.5)
XYZ	xyz(6.4106, 4.6564, 24.9820)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C358B #8B721C

analogous

#1C6D8B #1C358B #3A1C8B

triadic

#1C358B #8B1C35 #358B1C

tetradic

#1C358B #8B1C6D #8B721C #1C8B3A

square

#1C358B #8B1C6D #8B721C #1C8B3A

split-complementary

#1C358B #8B3A1C #6D8B1C

monochromatic

#070E25 #122258 #1C358B #2648BE #4768DA

Accessibility & contrast

On white

10.87

#1C358B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#1C358B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C358B

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C358B	#FFFFFF	#000000	##FFFFFF
##1C358B	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428E

Deuteranopia (green-blind)

#003889

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1c358b;
/* rgb */ color: rgb(28, 53, 139);
/* oklch */ color: oklch(36.9% 0.146 266.5);

Tailwind

colors: {
  custom: {
    50: '#6b6bae',
    500: '#1c358b',
    950: '#000000',
  },
}

SCSS

$custom: #1c358b;
$custom-light: #6b6bae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c358b",
  "rgb": {
    "r": 28,
    "g": 53,
    "b": 139
  },
  "hsl": {
    "h": 226.486,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.36871,
    "c": 0.1462,
    "h": 266.5
  },
  "luminance": 0.04657
}

Semantic roles & 50–950 ramp

primary

#1C358B

secondary

#BCA247

accent

#C33EE9

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1C358B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →